I once had someone at work book me into the Britannia hotel in Nottingham. What an absolute dive. It was so popular for sex trafficking that they required passports (or maybe other photo ID) from all residents. I know in theory hotels are meant to take this for overseas visitors but I have only one other time in the UK experienced it applied as a blanket policy including UK nationals.
The next time I had a hotel stay in Nottingham I explicitly asked for anywhere but the Britannia!
Oh yes, the Nottingham one is notoriously poor! I wouldn't touch the city centre ones with a barge pole! I've stayed there once many, many moons ago and it felt both unsafe and dirty and from what I can tell it's only got worse.
Although, saying that I have been to the Manchester Airport 60's concrete block that overlooks the Princess Parkway as it offered a deal where you could stay the night before flying and included 7 days of parking for £60, that's insane as most of the other parking companies were charging more than that just for the parking. I think they only charge a fiver as well for each extra days parking. There is a shuttle bus for £15 return, but you can just walk 5 minutes up the road and get the 43 night bus to the airport which is what we did. Pretty unbeatable bargain that was. And in fairness this hotel was absolutely fine, we got allocated a room on the top floor with decent views towards Manchester and it was on par with a basic Travelodge.
But certainly the ones I've been to at Royal Court (Coventry), Bosworth Hall (Leicester) and Palace Hotel (Buxton) were all surprisingly good. I mean, I wouldn't pay more than £50-60 a night and you can usually get a deal where breakfast is part of the room rate - but for that price getting a gym/bar/pool etc. I do enjoy a nice dip in a pool in the morning and the variety of rooms you get means you can sometimes mean I've ended up paying £40 for a double room and ended up getting a massive suite with views overlooking the gardens. These tend to be under the Elite Venue Collection which I think they're using to distance themselves from the Britannia brand!